Most 13-year-olds walk into middle school tech lab thinking about passing their next assignment or making something cool to toss into their backpack. Andy Barrett, an eighth-grader at Granville Middle School in Ohio, saw something entirely different when he looked at his school's 3D printer.

Most 13-year-olds walk into middle school tech lab thinking about passing their next assignment or making something cool to toss into their backpack. Andy Barrett, an…

An eighth-grader named Andy Barrett utilized a school 3D printer to design and sell custom fidget toys. He successfully created and sold approximately 150 unique toys to his…